Switch-clutch.



' J. KIEREN.

SWITCH CLUTCH.

APPLICATION FILED APR.11, 1912.

1,19,425 Patented Sept. 1,1914.

2 SHEETS-SHEET 1.

J, KIEREN. SWITCHAQLUTCH. APPLIGATION FILED APR.11,1912.

hlfim gfi Patented Sept. 1, 1914.,

Z SHBETS-SHEET 2.

4 4O 1 3 6.6 iii/ a? martian s'rivrns PATENT OFFICE.

'fbSEPI-I KIEREN, OF GILBERT, MINNESOTA.

SWITCH-CLUTCH.

it ,1 QQAES.

This invention relates to locking media-4 nisins for switch stands whereby the switch stand maybe locked to prevent the throwing of the switch by unauthorized persons.

A further object of the invention is to assemble the parts in such manner that it is practically impossible to break or. disconnect the parts of the stand whereby the switch may be thrown by an unauthorized person. i

A still further object of the invention is to provide, in combination with a switch stand mchanisln, a lock of the special design and especially adapted to be used in combination with such a stand mechanism. This lock is providedwith a bolt made up of sections connected together with a comparatively weak pin and in case the lock should be removed from the stand by force, this bolt will break at its weakest point, whereby a portion of the bolt will remain in engagement with the stand and thus render it impossible to operate the switch.

F or a full understanding of the invention and the merits thereof, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of the lock mechanism applied to a switch stand; Fig. 2 is a vertical sectional View of the same; Fig. 3 is'a' side elevation of the lock used upon the stand with parts removed and parts in section;'Fig. 4 is a transverse sec-.

tion of the lock cut on the line 22 of Fig. 3; Fig. 5 is a side elevation of the lock similar to Fig. 3 but showing the positions, of the parts when the bolt isretracted; Fig. 6 is a sectional view of the lock out on the line -if-t of Fig. 5; Fig. 7 is a perspective view of a block and guides used in the lock showing the parts separated. Fig. 8 is a similar view of the bolt of the lock and adjacent parts. Fig. 9 is a sectional view on the line 9 9 of Fig. 2. Corresponding and hke parts a rereferrcd Specification of Letters Patent.

Application filed April 11, 1912.

Patented Sept. 1, 1914. Serial No. 689,972.

to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

As illustrated in the accompanying drawings, the switch mechanism includes a center bar or mast 1, which is square in transverse section and is of the usual form. This center bar or mast is operatively connected to the switch points (not shown) in any usual manner. The upper portion of. the bar is square in cross section but the lower portion of the bar is circular in cross section. The square portion of the bar 1 is slidably received in a sleeve 2 which is provided with a central square passage for the center bar. When the sleeve 2' is properly positioned upon the center bar 1 it is secured thereto by set screws (not shown) or any other suitable securing devices, so that the sleeve cannot'move independently of the bar. A lever 3 is fulcruined upon the sleeve 2 in the usual manner and a collar 4 is slidably mounted upon the sleeve 2. Links 5 are pivotally connected with the lever 3 and the collar 4 and serve as means for moving the collar 4 along the sleeve 9 when the lever is swung. The collar 4 constitutes a principal part of the clutch mechanism and is provided at one side with a socket 6 which is adapted to snugly receive the face plate of thelock, hereinafter to be described. A perforation 7 passes through one side of the collar 4 and-extends through the inner wall of the socket 6 to the inner wall of the said collar. A perforation 8 is provided inone side of the sleeve 2 and a depression 9 is provided in one side of the center bar 1; The perforations 7 and S and the depression 9 at times register with each other for the purpose of receiving a bolt as will be eX-' plained hereinafter.

The switch stand proper or base 15 is of any suitable or usual form and resting upon the upper end of the switch stand is a clutch member, 15 having a circular opening through its center through which the central portion of the mast 1 passes. This clutch member 15 has a square socket upon its upper face which receives the lower end of the sleeve 2 and also receives exterior-tothe sleeve Qadownward 'prolongatimi 4 of the collar 4;. This downward extension 4 is square in form so as to fit withinthe square clutch member 15*.

socket formed upon the upper face of the Surrounding the downwardly extending central hub of the clutch member 15 is a collar 15 which is keyed to the central hub of the clutch member 15.

may be rotated by the handle when the ban dle is depressed, however, the collar 4 en gag-es with the clutch member 15 and the clutch member and the collar are thus interlocked with each other. The spring 15- has a tension of about two thousand pounds and this spring will resist any attempt to rotate the mast 1 by hand while the collar 4-. is depressed but will permit the rotation of the mast 1 by a passage of the train through the switch points.

In connection with the mechanism, a lock of special forth is provided. This lock consists of an end plate 16 which fits snugly in the socket 6 provided at the side of the col larl. A casing 1Tis riveted or otherwise permancntly secured to the vplate 16 and a bolt 18 is slidably mounted in the plate 16. The inner port ion of the bolt 18 is slotted as at 15) and receives a pin 20 which is mounted. upon one of the sides of the casing 17. The collar is provided at the upper and lower edges of the socket 6 with. outstanding lugs 21. and blocks 22 are inserted between the upper and lower lugs 21 and lie against the outer face of the plate 16. Pins 23 pass transversely through the lugs 21 and longitudinally through the blocks 22 and are sprcad'at their ends so that they and the blocks cannot be removed from the collar at without using a chisel or similar implement. The inner portion of the bolt 18 is recessed at its lower edge as at 2-1 and this recess is adapted to be entered by the head of a ke when the bolt is thrown. The bolt 18 is provided at its inner portion and at its upper edge with a shoulder 25. A tumbler 2b is pivotally mounted in the casing 17 and is provided with a lug 27 which normally engages the shoulder 25 upon the bolt 18 and holds the said bolt in projected position. A spring 28 is interposed between the upper portion of the tumbler 26 and the top side of the casing 17 and is under-tensionwifh av tendency to hold the free end portion of the tumbler depressed so that the lug 27 lies in the path of movement of the shoulder 25. The free end portion of the tumbler 26 is located in the path of movement of a key which is adapted to be inserted through the side of the'lock and engage with a key pin 29 fixed to the side of the lock located oppo site the key-hole opening in the casing.

Aspring 31 is interposed between the end of the casing 1? and the inner end of the bolt and is under tension with'a tendency to hold the outer end of the bolt projectedaway from the plate 16. The bolt 18 is adapted to be projected through the perforations 7 and 8 and into the depression 9 and center bar 1 when the parts are in locked positions, and while the bolt is in this position, it is impossible to moye the collar 4 vertically along the sleeve 2.

A shoe 32 is mounted upon the pin 20 and is held in engagement with the upper edge of the inner portion of the bolt 18 by means of the tumbler 26 so that the bolt is held in proper alinement with the spring 31. The

bolt 18 is made up of two pieces indicated- Therefore, should an unauthorized person attempt to break the lock by striking the same with a heavy implement, the bolt 18 would break at that point along the pin 3:) where it joins with the broader part of the piece 33. This would leave the piece 34 and When the bolt is in projected the pin 35 in the registering perforations 7 and S and the depression 9 and consequently, notwithstanding the fact that the body portion of the lock is removed from the clutch mechanism, the sleeve 2 could not be moved along the center bar 1 by the use of the lever 3 and therefore the switch to which the said center bar is connected could not be thrown.

The key may make a complete revolution and may be withdrawn from the casing17, but as soon as the perforation 7 in the sleeve 4. is moved into aline'l'nent with the depression 9, the spring 31 Will throw the bolt 18 into the said depression 9, whereby the sleeve 4; is held in iX ecLposition uponwthe center bar 1.

A lug 36 is mounted upon the collar 4 and is provided with a perforation 37. The lever 3'is provided with a slot 38 which is adapted to receivethe lug 36 when the free end portion of the said lever is swung down and the bail of a lock (not shown) may be passed through the perforation 37 so that the lever 3 is locked in a lowered position. The shoe 32 serves as a spacing block for that side portion of the casing 17 opposite the side thereof upon which the pin 20 is mounted and it also serves as a guide for the shank of the bolt 18 and prevents the bolt from binding in the end of the casingl7 as it is moved longitudinally. The said block will also prevent the sides of the easing from being dented in and thereby destroying the eflieiency of the lock.

The bolt 18 is provided at its inner part and atits upper edge with a shoulder 39. Guides are secured in the casing 17 t0 the upper side thereof, and a block 41 is slidably mounted between the said guides. This block is provided at its lower side with a downwardly disposed flange 42 which at times lies across the path of movement of the shoulder 39, and at other times lies out of the path of movement of the said shoulder. A spring 43 is-interposed between the block 41 and the side of the casing 17 and is under tension with a tendency to hold the block 41 in such position between the guides 40 that the flange 42 will lie in the path of movement of the shoulder 89, and thus hold the bolt 18 in retracted position. The block 41 carries at one end a lug 44.

This lug projects through an opening provided in the side of the casing 17. When an operator moves the bolt 18 by the use of a key to retracted position, the tension of the spring 43 comes into play and the flange 42 carried by the block 41 is moved across the path of movement of the shoulder 39. This also projects the end of the lug 44 somewhat beyond the outer surface of the side of the casing 17. The operator may then remove the key from the look. When it is desired to lock the switch stand and q the parts have been brought into register vided with a depression and a sleeve for this purpose, it'is only necessary to move the block 41 back by pressing against the end of the lug 44. This carries the flange 42 out of the path of movement of the shoulder 39, and under the tension of the spring 31 the bolt 18 is moved to protracted position and the parts of the stand are locked together.

I laving thus described the invention, what is claimed as new is:

1. In combination with a center bar prohaving a perforation, a locking mechanism co1nprising a collar mounted upon the sleeve, means for moving the collar, and a lock carried. by the collar and havin a bolt adapted to be projected through the perforation in the collar into the depression.

2. In combination with a center bar having ad'cpr'wssion, a sleeve slidably mounted thereon and provideo with a perforation, a collar mounted upon the sleeve, and a lock carried by the collar and having a bolt adapted to be ration into the depression, said bolt having ,at a point between its ends a weakened place.

3. In combination with a bar provided with a depression, a sleeve slidably mounted projected through the perfoupon the bar and having a perforation; a collar mounted upon the sleeve and having a socket, alock having an end portion'fittingsnugly within the socket, and a bolt carried by the lock and adapted'to be projected through the perforation in the sleeve into the depression in the bar.

4. In combination with a bar having a. depression, a sleeve slidably mounted upon the bar and having a perforation, a collar mounted upon the sleeve and having 'a socket, a lock fitting at one end in the socket and carrying a bolt adapted to be projected through the perforation in the sleeve into the depression in the bar, and means carried by the collar and lying over the end portion of the lock casing for securing thesame.

5. In combination with a bar provided with a depression, a sleeve slidably mounted upon the bar and having a perforation, a collar mounted upon the sleeve and having a socket with lugs located at the opposite sides thereof, a lock having a casing provided with an end plate which is snugly received Within the socket, blocks interposed between the lugs and lying against the outer face of said plate, and devices for securing the blocks to the lugs, said lock carrying a boltadapted to be projected through the perforation in the sleeve into the depression in the bar.

6. In combination with a bar having a depression, a sleeve slidably mounted upon the bar and having a perforation, a collar mounted upon the sleeve, a lock mounted upon the collar and having a bolt adapted to be projected through the perforation in the sleeve into the depression in the bar, said bolt consisting of an inner piece having a reduced pin, and an outer piece which is seated upon the pin, the adjacent ends of the said pieces fitting snugly against l ach other.

7. Ina switch operating mechanism, a bar, a base in which the bar is journaled, a collar slidably mounted upon the bar, means for sliding the collar, and locking means carried by the collar and "engageable with the bar.

8. In a switch operating mechanism, a

center balk} Collar slidably mounted thereon, means for sliding the collar, and locking means carried by the collar and having a boltengageable Wtih the bar, said bolt be ing' weakened at a point between its ends.

- 9. In a switch operating mechanism, a bar, a collar slidably mounted thereon, a lock carried by the collar, and a bolt carried by the lock and'engageable with' the bar, said bolt being weakened at a point between its ends, the weakened point being approximately at the edge ofthe casing of the lock when the bolt is in engagement with the bar.

10, In a switch operating mechanism, a bar, a collar slidably mounted upon the bar,

IiC

means for sliding the collar, said collar having a socket, a plate fitting snugly in the socket a locking device carried by the plate and ha ting a bolt engageable with the bar, and blocks permanently secured to the collar and fitting snugly against the outer surface of the plate atthe sides of the locking device.

11. In a switch operating mechanism, a center bar, a collar slidably mounted thereon,means for slidingthe collar, a locking means carried. by the collar and havinga holt engae'eable with the bar, means for moving said bolt to protracted position. and means located in the lock and o'peratable from the exterior thereof and independent of the bolt. retracting means for holding the bolt in retracted position. vl2. In a. switch operating mechanism, a \Ye-nter bar, a collar slidahly mounted thereon means for sliding the collar, :1 leek earby th collar and including a bolt,

resilient means for moving the bolt to p r0- tructed position, guides located in the lock, 2). block slidably mounted between the guides and carrying a part which projects from the side of the lock, and means for holding the block in the path of movement of the bolt to retain the bolt in retracted position.

13. In combination with a center bar, a sleeve arranged on said bar and having a perforation, a collar slidallly mounted on said sleeve, means for moving the collar, and a lock carried by the collar and having;' a bolt adapted to extend through the collar and intoihe sleeve,'- said bolt having at a point between its ends a weakened place.

In testimony whereof I ailix my signature in'presence of two witnesses.

JOSEPH KIEREW. n 5.] /Vitne'sses JOIIN'CARNNIE, C..(). \VELCH. 

